CCD astrometry of Saturn's satellites 1990-1994^*

¹ Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, Mile End Road, London E1 4NS, UK
² Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ, UK

Send offprint request to: D. Harper

Received: 19 February 1996
Accepted: 15 May 1996

Abstract

In this paper, we publish 1206 measurements of positions of the major satellites of Saturn made in 1990, 1991, 1993 and 1994 using CCD detectors attached to the 1-metre Jacobus Kapteyn Telescope on the island of La Palma. Analysis of the data as inter-satellite positions shows that the observations of Tethys, Dione, Rhea and Titan have root-mean-square residuals of 0.″08, corresponding to 500 km at the distance of Saturn.